PSYC 301 Lecture Notes - Lecture 4: Chromosome, Amine, Dna Ligase
Document Summary
Dna structure figure 15. 3: building block- nucleotide, deoxyribose sugar, phosphate group, nitrogenous base, adenine, guanine= purine, Dna replication: biologists proposed three alternative hypotheses for how old and new dna strands interact replication, semiconservative: old/new + new/old, conservative: old/old + new/new, dispersive: mixed: old & new. Dna strands: relieves tension, primase: rna nucleotides are added to prime the. Dna : add 10 rna nucleotides, provides a template for dna polymerase, complementary to 10 bases of parental dna, dna synthesis, dna polymerase iii adds nucleotides, extends strand. Okazaki fragments: of: 1000 nucleotides, rna primers removed, dna polymerase i replaces rna primers with. Dna nucleotides: gaps closed, dna ligase seals the sugar phosphate backbone. Dna synthesis around replication fork time but lagging strand leaps out. Correct sequence of enzymes used for synthesis of the lagging strand: helicase, single strand binding proteins, primase, dna polymerase iii, dna polymerase i, liagase.
